A recent report by PwC (Price Waterhouse Coopers) and their consumer industry series says that wearables are not embraced yet and are still considered a novelty. One-third of the folks who bought a device a year ago do not wear it now.
While it's great that we have modern medicine and pharmacology to alleviate the embarrassing problems of the natural aging process, I'm really much too busy to "grow old gracefully." I can't imagine retiring. That's where the apps come in.